The licence permitted Adani to increase the concentration of contaminants flowing into the Great Barrier Reef World Heritage Area and the Caley Valley wetlands from the 30 milligrams per litre (mg/L) to 100mg/L.

Exceedance of TEL

After the cyclone Adani reported to the Queensland Government that the concentration of contaminants measured in water samples collected at the location that flowed into the Great Barrier Reef World Heritage Area (known as W2) was 806mg/L. Those samples were collected using an automated process. The concentration of contaminants exceeded the temporarily permitted limit by more than 800%.

At the other authorised location (called W1), which flowed into the Caley Valley Wetlands, samples were collected after staff returned to the site following the cyclone. At the time of collection the concentration was 80mg/L which was below the temporary limit. However, there were no samples collected during the event so nobody knows whether the limit was exceeded at any time while the licence was in operation.

Government fine

On 3 May 2017 the head of Queensland’s Department of Environment and Heritage Protection, Jim Reeves, said that Adani could face a penalty of $3.8 million for a wilful breach of its licence. However, on 20 July DEHP issued Adani with a $12,190 fine for the breach. On 24 August the ABC reported that Adani had informed DEHP that it would contest the fine. The government has until 7 September 2018 to decide whether to take the matter to court.

Wetlands

Public awareness of the coal spill followed aerial photographs taken after Cyclone Debbie indicating a significant flow of coal from stockpiles at the port into Caley Valley wetlands through release point W1. A July 2017 report by the Queensland government reports on a scientific assessment of the wetlands post Cyclone Debbie. Soil samples collected by the Queensland government were analysed by two companies, Australian Laboratory Services (ALS) and UQ Materials Performance (UQMP).

ALS analysed the samples using Australian Standards AS2856 Part 1 & 2 and found that coal made up 26.8% of the samples taken from Caley Valley shore and 15.4% of the samples from Caley Valley wetlands. The report says that these represent “quite a significant volume of coal”.

UQMP used an in-house analysis method and found that the samples contained 10% and 2% coal just near location W2 and trace contamination across the wetlands.

In Adani’s 27 August 2018 statement the company quotes a Queensland government report that says there is little visual evidence of coal fines across the entire wetland.

Mackay Conservation Group visited the Caley Valley wetlands on 27 & 28 April 2017 following an invitation from Queensland’s environment minister. We had been told that we would be able to collect soil samples at the site but on arrival people representing Adani told us we could not collect any samples or photographs. During our visit we observed significant coverage of coal fines in the parts of the wetland we were permitted to visit. The Queensland Government photo above shows significant coal contamination in the soil sample taken in the Caley Valley wetlands. More photos from the site inspection can be found here.

Adani has been required by the Queensland Government to undertake an environmental evaluation into the causes and impacts of the coal spill into the Caley Valley wetlands. Adani has appealed this requirement and the case will be heard in October 2018.